Back to explorer

entry

precision

/pɹɪˈsɪʒ.ən/

Exactness, especially in measurement

From Latin prae (before) + Latin caedere / cidere (to cut).

noun
adjective
prae
Latin
Verified
prae
prefix meaning 'before' or 'in front of'

from Latin praecisionem (nominative praecisio ) "a cutting off," in Medieval Latin "precision," noun of action

Latin
AI-inferred
praecidere
with caedere, 'to cut off'; the prefix sharpens the sense
Latin
Verified
praecisionem / praecisio
noun of action, 'a cutting off'

from Latin praecisionem (nominative praecisio ) "a cutting off," in Medieval Latin "precision," noun of action

French
Verified
précision
borrowed and reshaped in French before entering English

from French précision (16c.) and directly

+1 more source
caedere / cidere
Latin
AI-inferred
caedere
to cut, strike
Latin
AI-inferred
praecidere
literally 'cut off before' or 'cut away'
Medieval Latin
Verified
praecisionem
abstract noun for the act of cutting off

from Latin praecisionem (nominative praecisio ) "a cutting off," in Medieval Latin "precision," noun of action

English
Verified
precision
first recorded in the 1630s

from French précision (16c.) and directly

+1 more source
Combined
precision
Entered English in the 1630s from French précision, with the older Latin sense 'a cutting off'; the modern sense of exactness appears by 1740.
Modern English
Verified
precision = exactness
the idea shifts from 'cutting away excess' to 'careful accuracy'

from French précision (16c.) and directly

+1 more source
Modern English
Verified
precision engineering / precision measurement
technical uses preserve the notion of fine control and no wasted motion

from French précision (16c.) and directly

+1 more source
Modern English
precision

Precision began life with a knife in its hand. In Latin, praecidere meant to cut off, and that physical chopping-down became a mental one: trim away the extra, leave only what matters. By the 1630s English had borrowed the French précision, and the word still smelled faintly of the workshop and the surgeon’s table before it settled into today’s calm, mathematical exactness. Its cousins are a lively bunch: precise, concise, incise, and decision all orbit that same Latin cutting root. So when a scientist wants precision, the old word is still doing the same job it did in Rome—getting rid of the loose ends, one clean slice at a time.

§